ProSoft Technology MVI56E-MNET/MNETXT - Manual (Page 127)

MVI56E-MNET / MNETXT ♦ ControlLogix Platform Reference
Modbus TCP/IP Interface Module User Manual
ProSoft Technology, Inc. Page 127 of 181
April 23, 2014
Pass-Through Block 9959 from Module to Processor
Word Offset Description Length
0 0 1
1 9959 1
2 Number of word registers in Modbus data set 1
3 Starting word address for Modbus data set 1
4 to 53 Modbus data set 50
54 to 103 Bit mask for the data set. Each bit to be considered with the
data set will have a value of 1 in the mask. Bits to ignore in
the data set will have a value of 0 in the mask. 50
104 to 248 Spare data area 145
249 9959 1
Pass-Through Block 9970 from Module to Processor
Word Offset Description Length
0 0 1
1 9970 1
2 1 1
3 0 1
4 to 248 Spare data area 245
249 9996 1
The ladder logic should copy and parse the received message and control the
processor as expected by the Client device. The processor responds to the
formatted pass-through blocks with a write block.
Response Blocks 9956, 9957, 9958, 9959, 9960, 9961, or 9970 from Processor to Module
Word Offset Description Length
0 9956, 9957, 9958, 9959, 9960, 9961, or 9970 1
1 to 249 Spare data area 247